A Nishiki Century, from what I can tell it was manufactured in 1984.
It seems the PO bought it, rode it maybe 20 feet, the stuck it in the garage. I pulled apart the headset, and the bearing races look brand spanking new, I then realized I am the first one to take the wheels off, based on the lack of gouges in the paint from the wheel nuts. There aren't even scratches in the braking surface on the wheels! It's got some scratches in the paint, looks like it spent most of it's life in the garage.
The only thing that is not original as far as I can tell is the seat, it's actually a childs seat, though I have a period correct Cinelli Volare SLX that I think will look nice.
From what I understand, the Century was Nishikis low end model, and this frame was actually manufactured by Giant, it is not ChroMo.
This is my Fiances first bike in many many years, can't wait to go riding with her when I am finished fixing it up (which basically means new grease).